Year	Billions Of Dollars
1919	16.2570
1920	15.6490
1921	10.3980
1922	12.3720
1923	16.8860
1924	14.2300
1925	18.0160
1926	18.5730
1927	17.7970
1928	17.4190
1929	20.6620
1930	14.3410
1931	10.1520
1932	3.84800
1933	4.16000
1934	5.04300
1935	9.63400
1936	13.7740
1937	14.8110
1938	11.0080
1939	15.1220
1940	19.3230
1941	24.8260
1942	26.6290
1943	33.7060